Physics

Problem

A siren on a dock emits sound of frequency

500\,\text{Hz}

. The wave takes

0.20\,\text{s}

to travel through air to the water surface at

340\,\text{m/s}

and then

0.10\,\text{s}

to travel underwater at

1480\,\text{m/s}

. What is the total distance covered by the disturbance after the

0.30\,\text{s}

? a)

510\,\text{m}

216\,\text{m}

68\,\text{m}

330\,\text{m}